1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef OOX_VML_VMLINPUTSTREAM_HXX 25 #define OOX_VML_VMLINPUTSTREAM_HXX 26 27 #include <com/sun/star/io/XInputStream.hpp> 28 #include <cppuhelper/implbase1.hxx> 29 #include <rtl/string.hxx> 30 31 namespace com { namespace sun { namespace star { 32 namespace io { class XTextInputStream; } 33 namespace uno { class XComponentContext; } 34 } } } 35 36 namespace oox { 37 namespace vml { 38 39 // ============================================================================ 40 41 typedef ::cppu::WeakImplHelper1< ::com::sun::star::io::XInputStream > InputStream_BASE; 42 43 /** An input stream class for VML streams, implementing the UNO interface 44 com.sun.star.io.XInputStream needed by the Expat XML parsers. 45 46 This stream reads the data from the input stream passed to the constructor, 47 and parses all XML elements for features unsupported by the current Expat 48 XML parser: 49 50 1) All elements that have the form '<![inst]>' where 'inst' is any string 51 not containing the characters '<' and '>' are stripped from the input 52 stream. 53 54 2) Multiple occurrences of the same attribute in an element but the last 55 are removed. 56 57 3) Line breaks represented by a single <br> element (without matching 58 </br> element) are replaced by a literal LF character. 59 */ 60 class InputStream : public InputStream_BASE 61 { 62 public: 63 explicit InputStream( 64 const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& rxContext, 65 const ::com::sun::star::uno::Reference< ::com::sun::star::io::XInputStream >& rxInStrm ); 66 virtual ~InputStream(); 67 68 virtual sal_Int32 SAL_CALL readBytes( ::com::sun::star::uno::Sequence< sal_Int8 >& rData, sal_Int32 nBytesToRead ) 69 throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 70 virtual sal_Int32 SAL_CALL readSomeBytes( ::com::sun::star::uno::Sequence< sal_Int8 >& rData, sal_Int32 nMaxBytesToRead ) 71 throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 72 virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) 73 throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 74 virtual sal_Int32 SAL_CALL available() 75 throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 76 virtual void SAL_CALL closeInput() 77 throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 78 79 private: 80 void updateBuffer() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 81 ::rtl::OString readToElementBegin() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 82 ::rtl::OString readToElementEnd() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); 83 84 private: 85 ::com::sun::star::uno::Reference< ::com::sun::star::io::XTextInputStream > 86 mxTextStrm; 87 ::com::sun::star::uno::Sequence< sal_Unicode > maOpeningBracket; 88 ::com::sun::star::uno::Sequence< sal_Unicode > maClosingBracket; 89 const ::rtl::OString maOpeningCData; 90 const ::rtl::OString maClosingCData; 91 ::rtl::OString maBuffer; 92 sal_Int32 mnBufferPos; 93 }; 94 95 // ============================================================================ 96 97 } // namespace vml 98 } // namespace oox 99 100 #endif 101